streamlit dropdown

# Add selectbox in streamlit
>>> option = st.selectbox(
...     'How would you like to be contacted?',
...     ('Email', 'Home phone', 'Mobile phone'))
>>>
>>> st.write('You selected:', option)

url = "https://covid.ourworldindata.org/data/owid-covid-data.csv"
data = get_data(url)

locations = data.location.unique().tolist()

sidebar = st.sidebar
location_selector = sidebar.selectbox(
    "Select a Location",
    locations
)
st.markdown(f"# Currently Selected {location_selector}")

daily_cases = data.groupby(pd.Grouper(key="date", freq="1D")).aggregate(new_cases=("new_cases", "sum")).reset_index()
fig = daily_cases.iplot(kind="line", asFigure=True, 
                        x="date", y="new_cases")
st.plotly_chart(fig)